No mouse interaction possible when opening dialog during drag operation

This bug lock all interaction with the UI and force to quit by killing the process

1. Open the same file in Qt Creator and an external editor
2. Modify the file with the external editor
3. Come back on QtCreator and drag any file from "Project" or "Systeme files" before the request to update the modify file
4. When the request window to update the file appear, all interaction are lock between the dragged file and the modal window